Tire got swapped today and I asked to keep it. I mean, I’m pretty sure i can throw it away for free if i don’t think of another use for it. I’m sure they would have charged me some kind of disposal anyway. So after dissecting, it wasn’t a razor blade, but I could’t say what it was.
It wasn’t as bad as I expected, though it did probably go through some cords and it sliced up the tread block a bit, so a few thousand miles on it was probably unwise. So, what do I do with a 285/30/r22 tire? If those numbers mean nothing to you, just think… fucking ginormous.